Analysis
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max time kernel
146s -
max time network
44s -
platform
windows7_x64 -
resource
win7-20220414-en -
submitted
21-05-2022 00:16
Static task
static1
Behavioral task
behavioral1
Sample
DOCUMENTS.exe
Resource
win7-20220414-en
Behavioral task
behavioral2
Sample
DOCUMENTS.exe
Resource
win10v2004-20220414-en
General
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Target
DOCUMENTS.exe
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Size
664KB
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MD5
86c32660eae56874038d23816e4aeb25
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SHA1
9d33de36dbf70639cf0de14b9e70267897471500
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SHA256
ab6c643159c159af03c43e99e1ee15747f4c72de44e47b1ba6675d8160f5aa6e
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SHA512
0014c6d3d2e3b1ebf20457dfd60a8fd9420a6f8d7811d1c07714c09edf20aaaab13ce7f742f977d17ab7724cc01ed130561501219f10b730e4ad6ac7d1b35387
Malware Config
Extracted
agenttesla
Protocol: smtp- Host:
mail.el-sever.com - Port:
587 - Username:
[email protected] - Password:
admin123
Signatures
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AgentTesla
Agent Tesla is a remote access tool (RAT) written in visual basic.
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AgentTesla Payload 6 IoCs
Processes:
resource yara_rule behavioral1/memory/1896-65-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1896-64-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1896-66-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1896-69-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla behavioral1/memory/1896-67-0x0000000000446F4E-mapping.dmp family_agenttesla behavioral1/memory/1896-71-0x0000000000400000-0x000000000044C000-memory.dmp family_agenttesla -
Drops file in Drivers directory 1 IoCs
Processes:
RegSvcs.exedescription ioc process File opened for modification C:\Windows\system32\drivers\etc\hosts RegSvcs.exe -
Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\15.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
RegSvcs.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\CJzRAE = "C:\\Users\\Admin\\AppData\\Roaming\\CJzRAE\\CJzRAE.exe" RegSvcs.exe -
Suspicious use of SetThreadContext 1 IoCs
Processes:
DOCUMENTS.exedescription pid process target process PID 272 set thread context of 1896 272 DOCUMENTS.exe RegSvcs.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 6 IoCs
Processes:
DOCUMENTS.exeRegSvcs.exepid process 272 DOCUMENTS.exe 272 DOCUMENTS.exe 272 DOCUMENTS.exe 272 DOCUMENTS.exe 1896 RegSvcs.exe 1896 RegSvcs.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
DOCUMENTS.exeRegSvcs.exedescription pid process Token: SeDebugPrivilege 272 DOCUMENTS.exe Token: SeDebugPrivilege 1896 RegSvcs.exe -
Suspicious use of WriteProcessMemory 23 IoCs
Processes:
DOCUMENTS.exedescription pid process target process PID 272 wrote to memory of 1116 272 DOCUMENTS.exe schtasks.exe PID 272 wrote to memory of 1116 272 DOCUMENTS.exe schtasks.exe PID 272 wrote to memory of 1116 272 DOCUMENTS.exe schtasks.exe PID 272 wrote to memory of 1116 272 DOCUMENTS.exe schtasks.exe PID 272 wrote to memory of 1204 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1204 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1204 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1204 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1204 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1204 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1204 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1896 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1896 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1896 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1896 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1896 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1896 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1896 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1896 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1896 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1896 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1896 272 DOCUMENTS.exe RegSvcs.exe PID 272 wrote to memory of 1896 272 DOCUMENTS.exe RegSvcs.exe -
outlook_office_path 1 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Office\16.0\Outlook\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe -
outlook_win_path 1 IoCs
Processes:
RegSvcs.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows NT\CurrentVersion\Windows Messaging Subsystem\Profiles\Outlook\9375CFF0413111d3B88A00104B2A6676 RegSvcs.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe"C:\Users\Admin\AppData\Local\Temp\DOCUMENTS.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmp712B.tmp"2⤵
- Creates scheduled task(s)
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"{path}"2⤵
- Drops file in Drivers directory
- Accesses Microsoft Outlook profiles
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- outlook_office_path
- outlook_win_path
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\tmp712B.tmpFilesize
1KB
MD5dc436ff5b60ef8168376c73a193ed25c
SHA10943c8a1a0851b7b79d31fadb488cce2e0444638
SHA256949ee6cece73e1304479fc963d79d2fd8e6410f451c1ce0ae6fd6e1b40b70705
SHA5121f66711762ef86444a1e4edd5e3105b2ca5e83ec72bc6c2e04c7b5a9de1f50df3a6a85c75fc54003e4ebb0c9d8061455a6ef2e544726536592fb32dbf99736bd
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memory/272-57-0x0000000000B10000-0x0000000000B84000-memory.dmpFilesize
464KB
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memory/272-56-0x0000000000400000-0x000000000040A000-memory.dmpFilesize
40KB
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memory/272-54-0x0000000000FD0000-0x000000000107A000-memory.dmpFilesize
680KB
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memory/272-58-0x00000000044D0000-0x0000000004526000-memory.dmpFilesize
344KB
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memory/272-55-0x00000000753B1000-0x00000000753B3000-memory.dmpFilesize
8KB
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memory/1116-59-0x0000000000000000-mapping.dmp
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memory/1896-62-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1896-61-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1896-65-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1896-64-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1896-66-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1896-69-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB
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memory/1896-67-0x0000000000446F4E-mapping.dmp
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memory/1896-71-0x0000000000400000-0x000000000044C000-memory.dmpFilesize
304KB